[Dockerfile] install missing eclint package
diff --git a/Dockerfile b/Dockerfile
index 49bc3c5..22e759a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -101,7 +101,7 @@
 # nodejs and tools
 RUN bash -c 'source $HOME/.nvm/nvm.sh   && \
     nvm install node                    && \
-    npm install -g doctoc urchin        && \
+    npm install -g doctoc urchin eclint && \
     npm install --prefix "$HOME/.nvm/"'
 
 # Set WORKDIR to nvm directory